Publication 2098-IN003E-EN-P — April 2004
Interconnect Diagrams B-19
Controlling a Brake
Example
The relay output of the Ultra3000 is suitable for directly controlling a
motor brake, subject to the relay voltage limit of 30V dc, and the relay
current limit of 1A dc. For brake requirements outside of these limits,
an external relay must be used. If a transistor output is used, a control
relay is also required.
The following table lists Allen-Bradley motors that are compatible
with the internal relay output (CN1, pins 43 and 44), when used for
controlling a brake. All other motors require an external control relay.
1
Applies to 230V and 460V motors.
Figure B.19 shows an example configuration using Digital Output 1
and an external control relay to control a motor brake which exceeds
internal relay ratings.
Figure B.19
Example Configuration Controlling a Motor Brake
1
Flyback diode (1N4004 rated 1.0A @ 400V dc) suppresses collapsing field of brake coil.
2
Digital Output 1 (pin 39) configured as Brake in Ultraware software.
3
For Digital Output 1 specifications, refer to Figure 2.25 in Chapter 2.
Compatible Brake Motors Brake Current Compatible Brake Motors Brake Current
F-4030, -4050, and -4075 0.88A MPL/MPF-x310, -x320, -x330
1
0.50A
H-3007 and -3016 0.60A MPL-x420, -x430, -x4520, -x4530, -x4540
1
0.64A
H-4030, -4050, and -4075 0.69A MPF-x430, -x4530, -x4540
1
N-2302, and -2304 0.28A MPG-x004
1
0.33A
N-3406, -3412, -4214, and -4220 0.36A MPG-x010
1
0.45A
N-5630, -5637, and -5647 0.71A MPG-x025
1
Y-1002 and -1003 0.26A MPG-x050
1
0.50A
Y-2006 and -2012 0.31A MPG-x110
1
1.0A
Y-3023 0.37A 1326AB-B4xxx 0.88A
CN1
29
27
39
28
I/O Power
I/O Common
Digital Output 1
I/O Common
CR1
Ultra3000
Brake
Feedback
Power
Servo
Motor
Power Supply
3A @ 24V dc
+
_
CR1
1
2, 3
IMPORTANT
Flyback diodes must be used when controlling a
brake coil with the relay or digital output.
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